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The interactions between a polybetaine and anionic, cationic, zwitterionic and neutral surfactants were studied by a fluorescence experiment with pyrene as a probe, isothermal titration calorimetry, and 1H NMR spectroscopy. The polybetaine was a phosphorylcholine-based polymer (PNIPAM-PC) consisting of equimolar amounts of N-isopro- pylacrylamide and N-phosphoryl- choline-N′-ethylenedioxybis (ethyl)acrylamide...
The interaction of chitosan and its N-dodecyl and poly(ethylene glycol) derivatives with 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) vesicles was studied to evaluate the influence of molecular architecture of the polymers on the liposomes. The study was carried out in aqueous solution using differential scanning microcalorimetry (DSC) and dynamic light scattering. The interaction of these polymers...
Dilute aqueous solutions of thermo-responsive poly(N-vinyl caprolactam)-graft-polyethylene oxide (PVCL-g-PEO) copolymers were studied by light scattering and high sensitivity differential scanning microcalorimetry. These copolymers are double hydrophilic at low temperatures, but become amphiphilic upon heating the solutions above the cloud point temperature of the PVCL segments (T CP ). The...
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